Active clinical trials for "Atrial Fibrillation"

Assess impact of Tart Cherry Concentrate in cardiac surgical patients on POAF and related clinical and economic outcomes. Measure inflammation gene transcripts in cardiac tissue.

The study aims to evaluate the appropriateness of initiating oral anticoagulation for stroke risk reduction in dialysis populations with atrial fibrillation. Specifically, the study will assess the overall safety, tolerability, and efficacy of initiating treatment with Warfarin in patients with end-stage renal disease on dialysis and atrial fibrillation.

No randomized head-to-head comparison between the individual Non-vitamin K Antagonist Oral Anticoagulants (NOAC) exists. The DANNOAC-AF study is a nationwide cluster randomized cross-over study comparing efficacy and safety of the four NOACs, edoxaban, apixaban, rivaroxaban and dabigatran for oral anticoagulation in atrial fibrillation and atrial flutter across Danish hospitals and cardiology clinics.

Atrial fibrillation (AF) is progressively common, and increases the risk of stroke five-fold. Oral anticoagulation is the mainstay therapy; however, it increases the risk of bleeding. Moreover, 30% with AF and at risk of stroke are not in relevant anticoagulation. The randomized PROTECT-AF trial has demonstrated the superiority of left atrial appendage occlusion (LAAO) as compared to warfarin for prevention of the combined endpoint of stroke, major bleeding and cardiovascular mortality. However, studies comparing LAAO to therapy with novel oral anticoagulants (NOAC) have not been carried out. This study aims to assess the effect of left atrial appendage occlusion (LAAO) to reduce the incidence of stroke, systemic embolism, major bleeding and all-cause mortality in patients with atrial fibrillation (AF) and a prior ischemic stroke or transient ischemic attack (TIA).

Atrial fibrillation is a heart rhythm disorder that often occurs after heart surgery. During atrial fibrillation blood cloths may form, predominantly in the left atrial appendage, a small sac in the wall of the left side of the heart. Some heart surgeons close this appendage to protect against stroke, particularly in patients with a history of atrial fibrillation, yet there is little evidence to support the efficacy and safety of this practice. We therefore conducted the Left Atrial Appendage Closure by Surgery (LAACS) study (2010-2016) were patients in whom the appendage was closed (by chance) suffered fewer brain damages that patients where it remained open. Although encouraging, these results were not only based on strokes, but also on scars without symptoms found in brain scans. The following LAACS-2 study will include a sufficient number of patients to determine whether future guidelines should advise to close systematically the left atrium appendage during a heart operation.

Atrial Fibrillation (AF) is a common heart rhythm condition that affects over 3% of the total population. AF can lead to serious health problems such as heart failure or stroke and can also cause troublesome symptoms in some people. Although many advances have been made, there remains a pressing need to improvement treatment of AF. It is increasingly recognised that the brain and nerves can influence the electrical activity of the heart. Therefore, this research involves studying a new nerve target (Subclavian ansae) that is connected to the heart and can be a potential target for future treatment of AF. This nerve lies around an area close to an artery that runs to participant's left arm called left subclavian artery which can be approached via leg (key hole). The investigators aim to conduct this study in patients who have been referred for first time AF ablation.

Postoperative atrial fibrillation (POAF) is the most common arrhythmia after cardiac surgery with incidences ranging from 20% to 40% with the consequence of increasing mortality, morbidity, and hospital length of stay, as well as increasing the costs to the health care system. To prevent POAF the use of beta-blockers is suggested by the EACTA and ESC guidelines. Despite the prophylactic use, the discontinuation of beta-blockers in the perioperative period is a known risk factor that contributes to the occurrence of POAF. Due to the short half time and the highly beta-1-selective properties of Landiolol, it could be possible to initiate a betablocker for prevention in the immediate postoperative setting, without adverse effects like hypotension or severe bradycardia as seen with other betablockers like Metoprolol or even sometimes Esmolol. Landiolol is already approved for the treatment of atrial tachycardias but is not yet approved for the use of prevention of POAF. In multiple previous studies the preventive potential of Landiolol in cardiac surgery could be proven in japanese study populations, with limitations due to limited sample sizes. In these trials the use of low-dose Landiolol effectively reduced the incidence of POAF without significant differences of increased side effects or in the hemodynamic stability compared to the placebo or standard of care groups. The primary objective of this prospective, double-blind, randomized, placebo-controlled phase III trial is to prove that the postoperative application of low-dose Landiolol significantly reduces the incidence of POAF without increased adverse events or hemodynamic instability compared to the placebo group after cardiac surgery in a non-Asian population.

The purpose of this study is to demonstrate the added value of mobile health (mHealth) to detect atrial fibrillation (AF) early in the care path of cryptogenic stroke and transient ischemic attack (TIA) patients.

Up to 5% of Atrial Fibrillation (AF) patients may have or develop contraindications to use oral anticoagulation (OAC). Randomized controlled trial (RCT) data suggest that Left Atrial Appendage Occlusion (LAAO) may provide a non-inferior alternative for cardioembolic stroke protection in patients tolerant to OAC. However, RCT data for LAAO is lacking in patients with contra-indications to OAC using antiplatelet (APT) or no therapy as usual care. The hypothesis underlying this trial is to demonstrate that LAAO is superior to usual care for the prevention of stroke.

The investigators hypothesize that Obstructive Sleep Apnea (OSA) is an independent risk factor for atrial fibrosis development. The investigators aim to prove the presence and progression of atrial fibrosis on Delayed Enhancement Magnetic Resonance Imaging (DE-MRI) in OSA patients without atrial fibrillation (AF). The investigators will also investigate the correlation between OSA metrics (nocturnal oxygen saturation and Apnea Hypopnea Index (AHI)) and degree of fibrosis at baseline and its progression.